KR20040099809A - Apparatus for a tilt steering for automobiles - Google Patents

Abstract

PURPOSE: A tilt steering system of a vehicle is provided to adjust tilt angle with a simple structure, to decrease the number of parts without mounting a separate plate, and to easily secure a space. CONSTITUTION: A tilt steering system of a vehicle is composed of a supporting bracket(300) for connecting and installing upper and lower steering columns(100,200) covering a steering shaft; a fixed gear unit(400) mounted at the lateral side of an end of the lower steering column and arranged with saw teeth in an annular form; a movable gear unit(500) hinge-combined at the side of the upper steering column to move axially and formed with saw teeth engaged with the fixed gear unit at the other side; a lever(600) joined on the outside of the supporting bracket to move about a central shaft(601) and composed of an operating unit(610) formed at one end to pass through an operating hole(310) disposed at the supporting bracket and an intermittent unit(620) formed at the other end to intermit the movable gear unit; and an elastic body(700) switching the positions of the movable gear unit if intermittence of the lever is released.

Description

Tilt steering device for cars {Apparatus for a tilt steering for automobiles}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt steering apparatus of a vehicle. In particular, the tilt steering apparatus of a vehicle enables to easily adjust the tilt angle of a steering wheel by using a push button. It is about.

In general, tilt steering is a device that can freely adjust the angle or length of the steering wheel to fit the driver's physique, also called a variable steering wheel (tilt handle), It is mounted on the steering column.

1 is a schematic view showing a tilt steering of a general vehicle, wherein a cylindrical steering column 2 in which a steering shaft 1 is accommodated includes a lower steering column 3 and an upper steering column 4. And the upper steering column (3, 4) is connected to each other by a support bracket (5) fixed to the lower portion of the dash (6).

The upper steering column 4 is pivotally supported by the pin 7 on the support bracket 5 so as to be rotatable, and a tilt lever 8 is provided to intercept free rotation of the upper steering column 4.

An example of such a tilt steering is shown in US Pat. No. 5,143,402, which relates to a steering device capable of tilt adjustment to adjust the height of the steering wheel according to the driver's physical condition.

As shown in FIG. 2, a fixed gear part 41 having a plurality of teeth is formed in the lower part of the upper steering column 4, and the teeth formed in the fixed gear part 41 are centered around the pin 7. It is located on the arc.

On the other hand, the lower end of the support bracket (5) is a hinged fastening of the movable gear portion 51 meshed with the fixed gear portion 41, the movable gear portion 51 is elastically supported by a spring (51a), compression By the restoring force of the spring 51a, the movable gear portion 51 is maintained so that the engagement state with the fixed gear portion 41 is released.

Accordingly, as shown in FIG. 2, since the guide shaft 81 supports the lower end of the movable gear part 51 in the locked state, the fixed gear part 41 and the movable gear part 51 maintain the engagement state. And, the upper steering column 4 is in a state where the angle adjustment is impossible.

In addition, since the tilt lever 8 is elastically supported in the clockwise direction by an unillustrated elastic body in FIG. 2, if the external force does not act, the tilt lever 8 and the fixed guide shaft 81 are the lower end of the movable gear part 51. Does not deviate from

However, the steering column tilt adjusting device disclosed in US Pat. No. 5,143,402 has no separate cover toward the lower end of the locking structure, and thus, the tilt adjusting device is unintentionally generated due to interference with the driver's knee, guide shaft or tilt lever. The locking state of can be released.

In addition, in order to operate the locking / unlocking of the movable gear part, a pair of support plates must be installed to guide the guide shaft and the guide shaft, thereby increasing the number of components and securing the installation space.

Another example of such a tilt steering device is US Pat. No. 6,282,977.

As shown in FIG. 3, when the tilt lever 8 is rotated in a counterclockwise direction, the guide shaft 81 rotates in a counterclockwise direction while being tilted away from the lower end of the movable gear part 51. Since the guide shaft 81 supporting the lower end of the movable gear portion 51 is separated, the guide shaft 81 is spaced apart from the fixed gear portion 41 by the restoring force of the spring 51a that has been compressed, thereby allowing the upper steering column ( 4) Since the pin 7 can be rotated about its axis, the driver can adjust the degree of inclination by operating the steering wheel up and down.

When the angle adjustment of the steering wheel is finished, the tilt lever 8 is released, and the tilt lever 8 is rotated clockwise together with the guide shaft 81 by an elastic body (not shown).

Thus, when the guide shaft 81 is located at the lower end of the movable gear portion 51, the movable gear portion 51 is engaged with the fixed gear portion 41 and fixed, so that the upper steering column 4 has a set inclination angle. The fixation is done in the figure.

However, the US Patent No. 6,282,977 is also configured to release the tooth coupling or engagement between the movable gear and the fixed gear to adjust the inclination angle of the steering wheel, but the manufacturing of the components is difficult, the movable gear and the fixed gear There was a problem that the operation reliability of the tooth coupling state is poor.

The present invention is to solve the above-mentioned shortcomings, in the tilt steering apparatus of the vehicle, the tilt angle can be adjusted by a simple structure, there is no need to install a separate plate, the number of parts is reduced, the tilt steering of the car is advantageous in terms of space To provide a device.

The present invention and the support bracket is installed by connecting the upper steering column and the lower steering column covering the steering shaft; A fixed gear part installed at a side of the lower steering column end part and having teeth formed in an annular shape; A movable gear portion hinged to one side of the upper steering column so as to be rotatable axially, and having teeth formed on the other side thereof engaging the fixed gear portion; A lever which is rotatably coupled to a central axis on an outer surface of the support bracket, the one end of which includes an operating portion penetrating through an operation hole formed in the support bracket, and the other end of the lever includes an intermittent portion for controlling the movable gear; It is achieved by including an elastic body for switching the position of the movable gear portion when the interruption of the lever is released.

1 is a steering device equipped with a tilt steering device of a typical vehicle

Indicating schematic,

2 is an enlarged view illustrating main parts of an example of a tilt steering apparatus for a conventional vehicle;

3 is a main portion showing another example of the tilt steering apparatus of a conventional vehicle.

Magnifying Glass,

Figure 4 shows an embodiment of the tilt steering apparatus of the vehicle of the present invention

Some cutout perspective view,

Figure 5 is a side view showing a lever of the tilt steering apparatus of the vehicle of the present invention,

Figure 6 shows a fixing part of the tilt steering apparatus of the vehicle of the present invention

Floor plan,

Figure 7 is an operating state of the tilt steering apparatus of the vehicle of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: upper steering column 200: lower steering column

300: support bracket 400: fixed gear part

500: movable gear 600: lever

700: elastic body

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a partially cutaway perspective view showing an embodiment of the tilt steering apparatus of the vehicle of the present invention, Figure 5 is a side view showing a lever of the tilt steering apparatus of the vehicle of the present invention, the present invention, the upper steering covering the steering shaft A support bracket 300 installed by connecting the column 100 and the lower steering column 200; A fixed gear unit 400 installed at a side of the lower steering column 200 and having teeth 410 formed in an annular shape; A movable gear part 500 hinged to one side of the upper steering column 100 so as to be rotatable axially, and a tooth 510 engaged with the fixed gear part 400 on the other side thereof; It is coupled to the outer surface of the support bracket 300 by a central axis 601, the one end portion is an operating portion 610 penetrating through the operation hole 310 formed in the support bracket 300, the other end portion A lever 600 including an intermittent part 620 for controlling the movable gear part 500; The technical feature of the present invention is to include an elastic body 700 for switching the position of the movable gear 500 when the control of the lever 600 is released.

The movable gear 500 has a protrusion 520 formed at an end thereof, and a depression 530 is formed at an adjacent portion thereof so that the lever 600 is perpendicular to the lower steering column 200. When the projection 600 is positioned on the intermittent part 620 of the lever 600, and the lever 600 is folded, the intermittent part 620 of the lever 600 is recessed. 530).

Thus, when the lever 600 is vertically positioned and the intermittent portion 620 of the lever 600 is positioned on the protrusion 520, the movable gear 500 is engaged with the fixed gear 400 to the upper side. When the steering column 100 is fixed and the lever 600 is turned to one side, the engagement of the movable gear part 500 and the fixed gear part 400 is released, thereby positioning the upper steering column 100. It is adjustable.

On the other hand, in the operation hole 310 of the support bracket 300, as shown in Figure 6, the fixing portion 320 for fixing the position of the lever 600 in the center side is further configured, the lever 600 The operating part 610 of the) is fixed so that the position of the lever 600 is fixed.

In more detail, the fixing part 320 includes: a fixing rod 322 that is supported by the elastic body 321 and protrudes to fix the position of the operating part 610 of the lever 600; It is preferable to include a protrusion 323 which is located on the other side of the fixing rod 322 protruding a predetermined length.

7 is an operation state diagram of the tilt steering apparatus of the vehicle of the present invention. Hereinafter, the operation and effect of the present invention will be described with reference to FIGS. 4 to 7.

In the tilt steering apparatus of the present invention, the intermittent portion 620 of the lever 600 is located at the protrusion 520 of the movable gear 500, and thus, the fixed gear 400 and the movable gear portion ( The teeth 410 and 510 of 500 are engaged with each other, and the upper steering column 100 and the lower steering column 200 are fixed.

At this time, when the driver flips the operating part 610 of the lever 600 in the left direction of FIG. 4 to adjust the tilt angle of the steering wheel, the lever 600 is rotated about the central axis 601, and FIG. 7. Will be in the same state as

Then, the intermittent portion 620 of the lever 600 is moved as shown in FIG. 7 to be located in the recessed portion 530 of the movable gear portion 500 so that the movable gear portion 500 moves downward. As a result, the coupling of the teeth 510 and 410 of the movable gear 500 and the fixed gear 400 is released.

Thus, the upper steering column 100 and the lower steering column 200 is rotated around the hinge axis to adjust the tilt angle to the degree desired by the driver.

After the driver adjusts the tilt angle, when the operating part 610 of the lever 600 is returned to the state of FIG. 4, the intermittent part 620 of the lever 600 again returns to the movable gear part 500. The protrusion 520 is positioned, and the teeth 510 and 410 of the movable gear 500 and the fixed gear 400 are coupled and fixed.

The above embodiment is an example for explaining the technical idea of the present invention in detail, and the scope of the present invention is not limited to the above drawings and embodiments.

The present invention as described above is an invention in which the tilt angle can be adjusted by a simple structure, and there is no need to install a separate plate, thereby reducing the number of parts and having an advantageous effect in terms of securing space.

Claims (4)

A support bracket installed by connecting an upper steering column and a lower steering column covering the steering shaft; A fixed gear part installed at a side of the lower steering column end part and having teeth formed in an annular shape; A movable gear portion hinged to one side of the upper steering column so as to be rotatable axially, and having teeth formed on the other side thereof engaging the fixed gear portion; A lever which is rotatably coupled to a central axis on an outer surface of the support bracket, the one end of which includes an operating portion penetrating through an operation hole formed in the support bracket, and the other end of the lever includes an intermittent portion for controlling the movable gear; And a resilient body configured to switch the position of the movable gear part when the lever is released. The method of claim 1, wherein the movable gear portion, A protruding portion is formed at an end thereof, and a recessed portion is formed at an adjacent portion thereof, When the lever is positioned perpendicular to the lower steering column, the projection is located in the intermittent portion of the lever, and when the lever is flipped, the automobile is characterized in that the intermittent portion of the lever is located in the depression. Tilt steering device. The tilt steering apparatus of claim 1, wherein a fixing part for fixing the position of the lever is further configured at an operation hole of the support bracket. The method of claim 3, wherein the fixing unit, A fixed rod which is supported by the elastic body and protrudes to fix the position of the operating portion of the lever; Tilt steering device for a vehicle, characterized in that it comprises a protrusion located on the other side of the fixed rod protruding a predetermined length.